I don't think it's owned by Starwood, but I could be wrong. We stayed there last year in a 3 bedroom. It's a nice resort in a good location. Nice pool area, and large pleasant villa. Nothing bad to say really, we've stayed at Vistana and Cypress Harbour and my family preferred those resorts. DH felt they had more of a family, resort-ee, feel to them. He felt Star Island had more of a gucci , aloof feel to it. He missed having a restaurant or snack bar on site, as well as a little store. Personally, I felt it was very nice.
Jenn